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authorDong Aisheng <b29396@freescale.com>2013-10-30 22:09:53 +0800
committerChris Ball <chris@printf.net>2014-01-13 12:48:05 -0500
commit83cc16d767f94edf5821cc89d8300ddb6785810c (patch)
tree2cf2cdec1d8ed4e5ffc7c03dce237f56d3538bc7
parente2997c944dbdff3ffef993cee860f63eb06e347e (diff)
downloadop-kernel-dev-83cc16d767f94edf5821cc89d8300ddb6785810c.zip
op-kernel-dev-83cc16d767f94edf5821cc89d8300ddb6785810c.tar.gz
mmc: core: mmc DDR mode should not depend on UHS_DDR50
The MMC_CAP_UHS_DDR50 must work on 1.8v. However, the eMMC DDR mode can work on either 1.8v or 3.3v and should not depend on UHS_DDR50. So get rid of this limitation to let controller without 1.8v signal voltage support can also work for eMMC DDR mode if it claims. Signed-off-by: Dong Aisheng <b29396@freescale.com> Acked-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
-rw-r--r--drivers/mmc/core/mmc.c8
1 files changed, 2 insertions, 6 deletions
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index f631f5a..98e9eb0 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -1119,14 +1119,10 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
*/
if (mmc_card_highspeed(card)) {
if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_8V)
- && ((host->caps & (MMC_CAP_1_8V_DDR |
- MMC_CAP_UHS_DDR50))
- == (MMC_CAP_1_8V_DDR | MMC_CAP_UHS_DDR50)))
+ && (host->caps & MMC_CAP_1_8V_DDR))
ddr = MMC_1_8V_DDR_MODE;
else if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_2V)
- && ((host->caps & (MMC_CAP_1_2V_DDR |
- MMC_CAP_UHS_DDR50))
- == (MMC_CAP_1_2V_DDR | MMC_CAP_UHS_DDR50)))
+ && (host->caps & MMC_CAP_1_2V_DDR))
ddr = MMC_1_2V_DDR_MODE;
}
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